Illinois records.— Jackson County: Big Muddy 
same Refuge, October 3, 1971, Nielsen, determined by 
%. R. Irwin (INHS). 
The occurrence of E. zarucco in Illinois, previously 
onsidered probable, was confirmed by the above rec- 
rd, which represents a northward extension of its 
ange in the Mississippi Valley. According to Burns 
1964:167) E. zarucco is sporadic north of Tennessee, 
nd southern Illinois is probably the northern limit of 
ts range. 
Erynnis martialis (Scudder) 
Mottled dusky wing 
Visoniades martialis Scudder 1869:335 (type-locality 
“New Jefferson and Dallas County, Iowa’”’). 
*hanaos martialis: Worthington 1880:49; 
£931:352. 
irynnis martialis: Klots 1951:223; dos Passos 1964:20 
(No. 169). 
Illinois records.—Map 23. 
This easily recognizable species appears to be scarce 
ut statewide in distribution. There are two broods 
vith dates of capture from May 3 through August 21. 
\ccording to Burns (1964), E. martialis exhibits two 
emporal phenotypes. The host plant is Ceanothus amer- 
sanus (New Jersey tea) (Burns, loc. cit.). 
Holland 
Erynnis horatius (Scudder & Burgess) 
Horace’s dusky wing 
jisoniades horatius Scudder & Burgess 1870:301 ( type- 
locality “New England, Texas, Massachusetts”) . 
‘hanaos horatius: Holland 1931:353. 
rynnis horatius: Klots 1951:223; dos Passos 1964:21 
(No. 173). 
Illinois records—Map 24. 
Although horatius is widespread in Illinois, and 
robably common, our records reflect only one or two 
aptures in each locality from which it has been re- 
orted. This indicates that it must have been widely 
verlooked or confused with other Erynnis, chiefly juve- 
alis. Nearly all of the material we studied was taken 
‘om July to September. Although the species is dou- 
le-brooded, we have only two records of spring speci- 
ens from Illinois. Burns (1964) stated that horatius, 
ke other multivoltine Erynnis, develops spring and sum- 
ler phenotypes. Host plants include various species of 
Juercus (oaks). 
Erynnis juvenalis (Fabricius) 
Juvenal’s dusky wing 
lesperia juvenalis Fabricius 1793:339 (type-locality 
“America” ) . 
hanaos juvenalis: 
W311: 353. 
rynnis juvenalis: Klots 1951:226; dos Passos 1964:21 
(No. 174). 
Illinois records.—Map 25. 
E. juvenalis is generally distributed throughout IlIli- 
ols and is rather common. All records are from mid- 
pril through early June. Late-season records are un- 
nfirmed and probably represent horatius, except for 
ne authentic male from Lee Center, Lee County, Oc- 
Worthington 1880:49; Holland 
13 
tober 1, 1934 (INHS, ex Emil Beer collection). Since 
Burns (1964) asserted that E. juvenalis is strictly univol- 
tine except at the southern limits of its range, in Flori- 
da, this anachronistic record is difficult to explain. Host 
plants are oaks of various species. 
Timochares ruptifasciatus (Plétz) 
Timochares skipper 
Antigonus ruptifasciata Plétz 1884:27 
“South America”). 
Timochares ruptifasciata: Klots 1951:228. 
Timochares ruptifasciatus: Holland 1931:356; dos Pas- 
sos 1964:22 (No. 179). 
Illinois records.— JERSEY “County: Elsah, August 
29, 1941, C. L. Remington (P. S. Remington 1956). 
The individual was an obvious casual, perhaps wind- 
borne. 
(type-locality 
Staphylus hayhurstii (Edwards) 
Southern sooty wing 
Hesperia hayhurstti Edwards 1870:22 (type-locality 
Missouri’). 
Pholisora hayhurstii: 
195 te 218: 
Pholisora hayhursti: Holland 1931:346. 
Staphylus mazans hayhurstii: dos Passos 1964:23 (No. 
188b). 
Illinois records.—Map 26. 
This species is apparently absent in the northern 
counties; it is “scarce” in Perryton Township, Mercer 
County, at the apparent northern limit of its range in 
Illinois (PJC) but is more common southward. At El- 
sah, Jersey County, Remington found two broods. The 
first, flying from mid-May throughout June, consisted 
of “considerable numbers,” and the second, in late 
August, was smaller. We separate this species from 
S. mazans (Reakirt) on the advice of H. A. Freeman 
(personal communication). 
Worthington 1880:49; Klots 
Thorybes bathyllus (J. E. Smith) 
Southern cloudy wing 
Papilio bathyllus J. E. Smith 1797:43 (type-locality 
“[probably Screven County,] Georgia’). 
Eudamus bathyllus: Worthington 1880:49. 
Thorybes bathyllus: Holland 1931:335; Klots 1951: 
212; dos Passos 1964:25 (No. 200). 
Illinois records.—Map 27. 
This skipper is generally distributed throughout the 
state and is common. It has been recorded from late 
April through September. 
Thorybes pylades (Scudder) 
Northern cloudy wing 
fEudamus bathyllus Harris (nec J. E. Smith) 18620: 
312 (type-locality ‘“Massachusetts”) . 
Eudamus pylades Scudder 1870:207 
Worthington 1880:49., 
Thorybes pylades: Holland 1931:335; Klots 1951:212; 
dos Passos 1964:25 (No. 201). 
Illinois records.—Map 28. 
This species is distributed throughout Illinois. It 
(new name) ; 
